US980140A - Blue vat dye. - Google Patents

Blue vat dye. Download PDF

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Publication number
US980140A
US980140A US584526A US1910584526A US980140A US 980140 A US980140 A US 980140A US 584526 A US584526 A US 584526A US 1910584526 A US1910584526 A US 1910584526A US 980140 A US980140 A US 980140A
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United States
Prior art keywords
blue
vat dye
blue vat
dye
dichloroisatin
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US584526A
Inventor
Wilhelm Bauer
Alfred Herre
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Bayer AG
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Individual
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Publication date
Priority claimed from US51668609A external-priority patent/US961396A/en
Application filed by Individual filed Critical Individual
Priority to US584526A priority Critical patent/US980140A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00Indigoid dyes
    • C09B7/08Other indole-indigos

Definitions

  • WILHELM BAUER OF VOHWINKEL, NEAR ELBERFELD, AND ALFRED HERRE, OF ELBERFELD, GERMANY, ASSIGNORS TO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.
  • the new dye is in a dry state a dark blue crystalline powder with a metallic luster which is soluble in hot benzene with a blue coloration and is soluble in concentrated sulfurio acid with an olive coloration, and which yields with hydrosulfite and caustic soda lye an orange vat, dyeing cotton after exposure to air blue shades remarkable for their fastness to chlorin.
  • dycstufl obtainable from dichloroisatin-alpha-ch1orid and l-anthrol, which dyestufi' is in a dry state a blue crystalline powder, soluble in hot benzene with a pure blue and in concentrated sulfuric acid with an olive coloration, and which yields with hydrosulfite and caustic soda lye an orange vat from which cotton is dyed a pure blue, substantially as described.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

UNITED STATES PATENT OFFICE.
WILHELM BAUER, OF VOHWINKEL, NEAR ELBERFELD, AND ALFRED HERRE, OF ELBERFELD, GERMANY, ASSIGNORS TO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.
BLUE VAT DYE.
Specification of Letters Patent.
Patented Dec. 27, 1910.
No Drawing. Original application filed September 8, 1909, Serial No. 516,686. Divided and this application filed September 29, 1910. Serial No. 584,526.
To all whom it may concern:
Be it known that We,l/V1LHnLM BAUER and ALFRED HERRE, doctors of philosophy, chemists, citizens of the German Empire, resid-' ing, respectively, at Vohwinkel, near Elber feld, and Elberfeld, Germany, have invented new and useful Improvements in Blue Vat Dye, of which the following is a specification.
Our present application which is a divisional application from our Patent 961396, patented June 14, 1910, relates to the production of a specific vat dyestufi. It is obtained by condensing dichloroisatin chlorid with l-anthrol.
The new dye is in a dry state a dark blue crystalline powder with a metallic luster which is soluble in hot benzene with a blue coloration and is soluble in concentrated sulfurio acid with an olive coloration, and which yields with hydrosulfite and caustic soda lye an orange vat, dyeing cotton after exposure to air blue shades remarkable for their fastness to chlorin.
In order to illustrate the process more fully the following example is given, the parts being by weight:210 parts of dichloroisatin are converted in a dry chlorobenzene suspension into dichloroisatin chlorid by heating it with 210 parts of PO1 The mixture thus obtained is then poured into a hot solution which is well stirred of 220 parts of l-anthrol in dry chlorobenzene. Stirring is continued for 2 hours and the dye which separates on cooling is filtered off and washed.
We claim The herein described dycstufl obtainable from dichloroisatin-alpha-ch1orid and l-anthrol, which dyestufi' is in a dry state a blue crystalline powder, soluble in hot benzene with a pure blue and in concentrated sulfuric acid with an olive coloration, and which yields with hydrosulfite and caustic soda lye an orange vat from which cotton is dyed a pure blue, substantially as described.
In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.
WILHELM BAUER. [1 s.] ALFRED I-IERRE. [L.S.]
Witnesses WVALTER VONNEGUT, ALFRED HENKEL.
US584526A 1909-09-08 1910-09-29 Blue vat dye. Expired - Lifetime US980140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US584526A US980140A (en) 1909-09-08 1910-09-29 Blue vat dye.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51668609A US961396A (en) 1909-09-08 1909-09-08 Vat dye.
US584526A US980140A (en) 1909-09-08 1910-09-29 Blue vat dye.

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US980140A true US980140A (en) 1910-12-27

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US584526A Expired - Lifetime US980140A (en) 1909-09-08 1910-09-29 Blue vat dye.

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